Unraveling kinking: A plasticity enhancing failure mode in high strength nano metallic laminates

Zhang, Yifan; Zecevic, Miroslav; Chakraborty, Aritra; McCabe, Rodney J.; Nizolek, Thomas J.; Lebensohn, Ricardo A.; Carpenter, John S.; Li, Nan; Capolungo, Laurent

doi:10.1016/j.actamat.2023.119342

Acta Materialia

2023

DOI: 10.1016/j.actamat.2023.119342

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Unraveling kinking: A plasticity enhancing failure mode in high strength nano metallic laminates

Yifan Zhang,

Miroslav Zecevic,

Aritra Chakraborty

et al.

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2024

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Cited by 3 publications

References 72 publications

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Strong interfaces: the key to high strength in nano metallic laminates

Zhang,

Nizolek,

Capolungo

et al. 2024

Acta Materialia

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Strong interfaces: the key to high strength in nano metallic laminates

Zhang,

Nizolek,

Capolungo

et al. 2024

Acta Materialia

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Multilayered W–Cu composites with enhanced strength, electrical conductivity and wear resistance

Sun,

Han,

Hou

et al. 2024

Composites Part B: Engineering

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Role of interfaces on the mechanical response of accumulative roll bonded nanometallic laminates investigated via dislocation dynamics simulations

Chakraborty,

Kohnert,

Hunter

et al. 2024

J Mater. Sci: Mater. Theory

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Unraveling the effects of continuous dislocation interactions with interfaces, particularly at the nanometer length scales, is key to a broader understanding of plasticity, to material design and to material certification. To this end, this work proposes a novel discrete dislocation dynamics-based model for dislocation interface interactions tracking the fate of residual dislocation on interfaces. This new approach is used to predict the impact of dislocation/interface reactions on the overall mechanical behavior of accumulative roll bonded nanometallic laminates. The framework considers the dynamic evolution of the interface concurrent with a large network of dislocations, thus, accounting for the local short and long range effects of the dislocations under the external boundary conditions. Specifically, this study focuses on two-phase Fe/Cu nanometallic laminates, and investigates the role of the underlying elastic and plastic contrast of the Fe and the Cu layers on the composite response of the material. Moreover, the role of initial microstructures, resulting from processing is also investigated. Subsequently, the model is used to examine the effect of layer thickness and interface orientation relationship on the residual stresses of the relaxed microstructure. The associated mechanical response of these laminates are compared when loaded under normal direction compression, as well as shear compression. Finally, this work predicts a dominant effect of the layer thickness, as compared to the interface orientation relationship, on the macroscopic response and on the residual stresses of these nanolaminates, while the local dislocation transmission propensity through the interface is significantly influenced by the corresponding orientation relationship.

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Unraveling kinking: A plasticity enhancing failure mode in high strength nano metallic laminates

Cited by 3 publications

References 72 publications

Strong interfaces: the key to high strength in nano metallic laminates

Strong interfaces: the key to high strength in nano metallic laminates

Multilayered W–Cu composites with enhanced strength, electrical conductivity and wear resistance

Role of interfaces on the mechanical response of accumulative roll bonded nanometallic laminates investigated via dislocation dynamics simulations

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